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Elvas (Portuguese pronunciation: [ˈɛɫvɐʃ]) is a Portuguese municipality, an episcopal city and frontier fortress of Portugal, located in the district of Portalegre in Alentejo. It is situated about 230 km east of Lisbon, and about 15 km west of the Spanish fortress of Badajoz, by the Madrid-Badajoz-Lisbon railway. The municipality population in 2011 was 23,078, in an area of 631.29 km². The city itself had a population of 15,155 in 2001.
Elvas lies on a hill 8 km northwest of the river Guadiana. It is defended by seven bastions and the two forts of Santa Luzia and Nossa Senhora da Graça. Its late Gothic cathedral, which has also many traces of Moorish influence in its architecture, dates from the reign of Manuel I of Portugal (1495–1521). A 6 km long aqueduct supplies the city with pure water; it was begun early in the 15th century and completed in 1622. For some distance it includes four tiers of superimposed arches, with a total height of 40 m. The surrounding lowlands are very fertile, and Elvas is known for its olives and plums, the last-named being exported, either fresh or dried, in large quantities. Brandy is distilled and pottery manufactured in the city. The fortress of Campo Maior, 15 km to the northeast, is famous for its siege by the French and relief by the British under Marshal Beresford in 1811, an exploit commemorated in a ballad by Sir Walter Scott.
It was wrested from the Moors by Afonso I of Portugal in 1166; but was temporarily recaptured before its final occupation by the Portuguese in 1226. In 1570 it became an episcopal see. From 1642 until modern times it was the chief frontier fortress south of the Tagus; and it withstood sieges by the Spanish, in 1658, 1711 and 1801. The French under Marshal Junot took it in March 1808 during the Peninsular War, but evacuated it in August, after the conclusion of the Convention of Sintra.
Country sight. The trees in the foreground are cork oaks (Quercus suber), together with the remains of a cut wheat field . In second and third plan we can see vineyards (Vitis vinifera) and olive trees (Olea europea).